Imputation flag for age (IFAGEP)

Latest release
Census of Population and Housing: Census dictionary
Reference period


This variable indicates if a person's age was imputed. Imputation is a statistical process for predicting values where no response was provided to a question and a response could not be derived.

See also, Age (AGEP).


All persons


1Age not imputed
2Age imputed

Number of categories: 2

Question(s) from the Census form

What is the person’s date of birth and age?

How this variable is created

When age is imputed this variable is coded to ‘02 Age imputed’. See Age (AGEP) for methods on how age is imputed.

History and changes

No changes have been made for 2021.

Data use considerations

Imputation flag for age (IFAGEP) can be used to identify how many respondents’ age was imputed at different geographical levels.

Using the Imputation Flag for Age (IFAGEP), the non-response rate for Age was 4.4% in 2021. This is a decrease from 5.6% in 2016. For more information on imputation, see Census Methodology.

Related variables and glossary terms

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